Why is the translation looking in /messages/en/app.php?

Question

Yii

Added to components

'i18n' => [
            'translations' => [
                '*' => [
                    'class' => 'yii\i18n\DbMessageSource',
                    'sourceLanguage' => 'en_US',
                ],
            ],
        ],

but there is an error in the log

The message file for category 'app' does not exist: C:\xampp\htdocs\localhost/messages/ru/app.php

Why? If translations should be pulled from the base

Answer 1

It had to be like this

'i18n' => [
            'translations' => [
                'app' => [
                    'class' => 'yii\i18n\DbMessageSource',
                    'sourceLanguage' => 'en_US',
                ],
            ],
        ],